Improvement in lamps



L. H. OLMSTED.

Lamp.

No. 197,165. Patented Nov. 13, 1877.

wezvi 5% M Mbzewes gm zm UNITED STATES PATENT OFFICE.

LEVIQ'RETT H. OLMSTED, OF BROOkLYN, NEW YORK.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 197,165, dated November13, 1877; application filed June 22, 1877.

To all whom itnnag concern:

Be it known that I, LEV'ERETT H. OLM- STED, of Brooklyn, county ofKings, and State of New York, have invented a new and useful Improvementin Lamps; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawings, forming part of this specification.

This invention is more especially designed for that class of lamps usedfor the most part as night-lamps, in which the chimney is elevated sothat its lower edge is at, or nearly at, a level with the top of thewick-tube, and in which the vertical space between the cap and thebottom of the chimney is open at the sides.

The invention consists in a novel and effective, and yet very simple andcheap, mode of applying a toothed wick-adjusting wheel, which isespecially well adapted to such lamps.

Figure 1 in the drawing is an elevation of a lamp with my improvement.Fig. 2 is a central vertical section of the burner. Fig. 3 is ahorizontal vertical section of the burner in the line a: 00 of Fig. 1.Fig. 4 is an elevation of a lamp collar and burner, illustrating amodification of the invention.

a is the wick-adjusting wheel, which is a toothed wheel of the kindcommonly used for the purpose in lamps, and enters the wick-tube througha slot provided in the latter for its passage, its axle or pivotc beingsupported in lugs c 6 outside of the wick-tube C. These lugs are so neartogether that the wheel just works easily between them, and only a veryshort axle or pivot, c, is required, the usual button on the end of theaxle being dispensed with by protube 0, as shown in Figs. 1, 2, and 3,or to the cap A, as shown in Fig. 4 but I prefer to make the said lugs,as shown in Figs. 1, 2, and 3, on a metal band, b, which encircles andclasps the wick-tube. A irocve may be provided around the exterior ifthe wick-tube, as shown in Fig. 2, for the reception of the said bandand its better retention in place, and the said band may also besoldered to the tube.

The wheel a might be fast on its axle or pivot c, and turn freely inbearings in the lugs e e but as simplicity and cheapness of constructionare important objects of this invention, I prefer to make the wheelloose on the axle or pivot, which consists of a short piece of wireinserted through holes in the lugs c e, and through the eye of thewheel, and riveted at its ends outside of the lugs.

I claim- 1. In a lamp of that class havinga chimneyholder constructed tosupport the chimney, with its lower edge elevated above the cap at, ornearly at, a level with the top of ,the wicktube, a wick-adjusting wheelapplied within the opening between the chimney and the cap, andconstructed for direct application to it of the thumb or finger, wherebythe usual button for turning said wheel is dispensed with, substantiallyas herein described.

2. In a lamp in which the wick-tube is exposed between the cap and thebottom of the chimney-holder, the wick-adjusting wheel turning looselyon its axle or pivot, and adapted to be turned by direct application toit of the thumb or finger, substantially as herein described.

3. Awick-tube provided with a wick-raising attachment connected directlythereto at or near the top thereof, and outside of and above thelamp-cap, and directly independent thereof, or any attachment of thesame.

L. H. OLMSTED.

Witnesses:

MICHAEL RYAN, HENRY T. BROWN.

